We divide 85561231 by 80
Let's see how many times 80 fits into 85561231.

Advancing to step 1:
8 divided by 80 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 80

Moving on to step 2:
The number 80 fits into 85 1 times, leaving a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 80 from 85 and we're left with 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 80

On to step 3:
The number 80 fits into 55 0 times, leaving a remainder of 55.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we take 0 away from 55, we end up with 55.
Grab the next digit (6) from the dividend, add it to 55, then carry on: 556 / 80

Advancing to step 4:
80 can be fit into 556 6 times, resulting in a remainder of 76.
Put 6 as the next digit of the answer. 
Result so far: 106.0
Deduct 480 from 556 and we're left with 76.
Include the next digit (1) from the dividend after 76, then repeat: 761 / 80

Let's proceed to step 5:
The number 80 fits into 761 9 times, leaving a remainder of 41.
Write down 9 as next digit of the result. 
Result so far: 1069.0
The remainder is 41 after subtracting 720 from 761.
Fetch the next digit (2) from the dividend, attach it to 41 and continue: 412 / 80

Let's proceed to step 6:
When dividing 412 by 80, we get 5 with a remainder of 12.
The next digit of our result is 5. 
Result so far: 10695.0
Deduct 400 from 412 and we're left with 12.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 80

Moving on to step 7:
The number 80 fits into 123 1 times, leaving a remainder of 43.
The next digit of our result is 1. 
Result so far: 106951.0
Subtracting 80 from 123 leaves us with 43.
Include the next digit (1) from the dividend after 43, then repeat: 431 / 80

Let's proceed to step 8:
If we divide 431 by 80, we get 5 and a remainder of 31.
Use 5 as the next digit of our solution. 
Result so far: 1069515.0
Deduct 400 from 431 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 9:
The number 80 fits into 310 3 times, leaving a remainder of 70.
Write down 3 as next digit of the result. 
Result so far: 1069515.3
If we subtract 240 from 310, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 10:
If we divide 700 by 80, we get 8 and a remainder of 60.
Use 8 as the next digit of our solution. 
Result so far: 1069515.38
If we take 640 away from 700, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 11:
600 divided by 80 is 7 with a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 1069515.387
Subtract 560 from 600 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 12:
If we divide 400 by 80, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 1069515.3875
The remainder is 0 after subtracting 400 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 13:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1069515.3875
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 14:
0 divided by 80 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 1069515.3875
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 1069515.3875, with a leftover of 0.0.